| Father | Sir Arthur Lord D'Arcy Van Knayth (1505 - 1560) |
| Mother | Mary Carew (1516 - 1558) |
| Sibling | Sir Edward Darcy (1543 - 1612) |
| Sibling | Nicholas D'Arcy (1546 - 1560) |
| Sibling | Henry D'Arcy (1532 - 1577) |
| Sibling | Jane D'Arcy (1544 - ) |
| Sibling | Phillip D'Arcy (1542 - ) |
| Sibling | Charles D'Arcy (1539 - 1550) |
| Sibling | William D'Arcy (1540 - 1540) |
| Sibling | Francis D'Arcy (1550 - 1641) |
| Sibling | Arthur Darcy Jr. (1538 - 1560) |
| Sibling | Anne D'Arcy (1546 - ) |
| Sibling | Elizabeth Darcy (1542 - 1600) |
| Sibling | John Darcy (1549 - ) |
| Sibling | Mary D'Arcy (1533 - 1560) |
| Sibling | Thomas Darcy (1537 - ) |